when you're unknowningly hiding in the closet with another friend, and your homie is doing a chick preferrably from the back. Before he ejaculates, you run out of the closet with a camera recording them thus making your homie decide whether to stop and beat the shit out of you, or finish cumming, then proceed to work your mouth, thus becoming an angry bullrider. The 2nd person hiding in the closet then times how long the person with the camera lasted before getting punched in the face.

Ieszer: oh baby, i'm about to cum.
Bruce: SURPRISE!
Ieszer: WHAT THE FUCK? get the hell out of my room!
Jeff: ahahaha... took the angry bullrider 8 seconds to punch Bruce in the face.